SvennoJ said:
Peh said:
Thanks for the reply. But as far as I read, 4K 60 hz HDR 10 Bit RGB at chroma 4:4:4 are not possible with the current HDMI 2.0/a/b, because that exceeds the bandwidth of 18 Gbps. That's what current Premium HDMI cables are capable of.
On my PC/TV settings I can only go for YUV 4:2:2 10 Bit 4K at 60 hz or YUV 4:4:4 / RGB at 8 bit 4k 60 hz.
https://forums.geforce.com/default/topic/980356/4k-resolution-at-60p-and-10-bit-in-tv-help/
That's why I am curious at how the consoles are doing it. Or am I missing something?
HDMI 2.1 on the other hand doubles the bandwidth and newer HDMI cables are on the way for supporting that bandwidth.
On an additional note. Windows 10 CU only enables HDR on YUF 4:2:2 10 bit. I could use HDR on 8 bit before win 10 CU on Resident Evil 7. Now it looks like shit. Same goes for Forza 7 on PC in HDR.
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4K at 60hz 10 bit is 'only' 13.9 Gbps, within the max 14.4 Gbps max video bandwidth of an 18 Gbps cable. 3840x2160x60x30 / (1024x1024x1024)
I can't find any hard info on actual support though, nor do my tv or the ps4 pro offer any info on the bit depth, color space used or chroma compression. Just 2160p RGB all frequencies upto 60hz supported with HDR. I guess I'll need to find/make some test patterns to check for chroma subsampling and bit gradients.
HZD looks great though, but with nothing to compare, who knows what I'm looking at.
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I've found a site which does the calculation and explanation, bit it is in german.
https://www.professional-system.de/thema/4k/
For 8bit 60hz he calculates 16.7Gbps
and for 10 bit 60hz it is 20.4 Gbps. This exceeds the 18 gbps for the hdmi 2.0 port.
On different forums they also conclude the same, that it can't run on 10 bit 4k 60hz and chroma 4:4:4. This also explains why I cannot choose this setting on my PC.
Edit: Found a calculator
http://www.extron.de/product/videotools.aspx
This one displays even 22.28 Gbps.
So, the PS4 Pro can't do HDR10 in RGB / YUV 4:4:4. In fact, none can do via HDMI 2.0a/b.
First console with HDMI 2.1 will be Xbox One X and fully support it.
Hm...fuck....so, I need a Graphics card with hdmi 2.1 and a new TV.....wasted over 2000€....
